jquery 1.4 how to give pause / delay to this line ?

jquery 1.4 how to give pause / delay to this line ?

how to give pause / delay to this animation ?

  2. $(document).ready(function(){
  3.  $('.boxgrid.caption').hover(function(){  
  4.         $(".cover", this).stop().animate({top:'0px'},{queue:false,duration:300});  
  5.     }, function() {  
  6.         $(".cover", this).stop().animate({top:'100px'},{queue:false,duration:300});  
  7.     }); 
  8. });
this is a slide up and down animation and I need a delay before the slide down of that line

thanks